Words That Rhyme With "Radicals" :

3 syllables:

Canticles, capitals, capitols, madrigals, medical's, statical

4 syllables:

compatibles, fanatical, grammatical, lunatical, prelatical, sabbaticals, viatical

5 syllables:

apostatical, astrolabical, biomedicals, enigmatical, mathematical, nongrammatical, periodicals, problematical, ungrammatical